package com.dh.ch07; import java.util.*; public class HashMapTest { public static void main(String[] args) { HashMap<String,Integer>hashMap = new HashMap<String,Integer>(); hashMap.put("zhangsan",8008); hashMap.put("lisi",6000); Set<Map.Entry<String, Integer>> set = hashMap.entrySet(); for(Map.Entry<String,Integer>entry:set) { System.out.println(entry.getKey()+":"+entry.getValue()); } System.out.println("Modify...................."); hashMap.put("zhangsan", 8500); for(Map.Entry<String,Integer>entry1:set) { System.out.println(entry1.getKey()+":"+entry1.getValue()); } } }
创建一个HasMap对象,并在其中添加一些员工的姓名和工资:张三,8000,李四,6000.然后从HashMap对象中获取这两个人的薪水并打印出来,接着把张三的工资改为85000,再把他们的薪水显示出
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